Strategy Analytics tracked global smartphone shipments (sell in) improved +3% YoY in April 2017 mainly due to new models launched from Samsung, Huawei and others. Sales (sell through) to end users posted +1% annual growth thanks to ongoing improved economic climate in selected regions and newly launched models. However, inventory increased by +60% YoY mainly due to higher inventory volumes of selected vendors. Samsung top both shipments and sales chart, followed by Apple, Huawei, OPPO and vivo. This report tracks global smartphone monthly shipments (sell in), sales (sell through) and inventory volumes by 27 of the world's largest vendors from January 2016 to April 2017. The report is a valuable tool for OEMs, component makers, software developers, operators and other stakeholders to track key OEMs inventory level and support their planning activities.